sql sum group by - sql

Question

I have following sql query
DECLARE #frameInt INT
SELECT TOP 1 #frameInt = gs.FrameGenerationInterval
FROM dbo.GlobalSettings gs
SELECT mti.InternalId,
b.InternalId AS BrandId,
CASE
WHEN DATEDIFF(second, mti.StartTime, mti.EndTime) / #frameInt > 0 THEN DATEDIFF(second, mti.StartTime, mti.EndTime) / #frameInt
ELSE 1
END AS ExposureAmount,
c.InternalId AS ChannelId,
c.Name AS ChannelName,
COALESCE( (p.Rating *
CASE
WHEN DATEDIFF(second, mti.StartTime, mti.EndTime) / #frameInt > 0 THEN DATEDIFF(second, mti.StartTime, mti.EndTime) / #frameInt
ELSE 1
END * CAST (17.5 AS decimal(8,2))
),CAST( 0 as decimal(8,2)) ) AS Equivalent
FROM dbo.MonitorTelevisionItems mti
LEFT JOIN dbo.Brands b ON mti.BrandId = b.InternalId
LEFT JOIN dbo.Channels c ON mti.ChannelId = c.InternalId
LEFT JOIN dbo.Programs p ON mti.ProgramId = p.InternalId
--WHERE mti.Date >= #dateFromLocal AND mti.Date <= #dateToLocal
GROUP BY mti.InternalId, mti.EndTime, mti.StartTime,
c.Name, p.Name, p.Rating,b.InternalId, c.InternalId
It gives following result
I would like it to return 1 row with sums of exposure amount and equivalent from all rows. Rest of the cells are the same apart from InternalId that I dont really need (i can remove it from query)
I am not very good at sql. Thank for help.

Answer 1

For the sake of posterity (and because it's cool to learn something new), here's the general solution to your problem (instead of a copy-and-paste ready solution for your specific case):
SELECT group_field1, group_field2, ...,
SUM(sum_field1), SUM(sum_field2), ...
FROM (...your original SQL...) AS someArbitraryAlias
GROUP BY group_field1, group_field2, ...
In your specific case, the group fields would be BrandId, ChannelId and ChannelName; the sum fields would be ExposureAmount and Equivalent.
Note: To ease readability (since your original SQL is quite complex), you can use a common table expression:
WITH someArbitraryAlias AS (
...your original SQL...
)
SELECT group_field1, group_field2, ...,
SUM(sum_field1), SUM(sum_field2), ...
FROM someArbitraryAlias
GROUP BY group_field1, group_field2, ...
Note that, when using common table expressions, the immediately preceding statement must be terminated with a semicolon.